Tubing elevator



De.14,192e. 1,610,441

J. H. GBSON TUBING ELEVATOR Original Filed April 2l, 1923 2 Sheets-Sheet 2 5I noauto@ Patented Dee. ld, M92?. "i

reni* otros.

JOI-IN H. GIBSON, OF BRUIN, EENNSYLVANA.

uiten STATES The device forming the subject matter upon what may be denominated their upoi this application is adapted to be used per surface, to Jform a notch or seat 9. Lugs for holding tubing and the like, during the are formed on the jaws 2 and 3, on opelevation, lowering and manipulating of the posite sides of the line 11 where the jaws 5 tubing in well drilling operations. The abut, the lugs being located close to the seat structure comprises a pair of relatively movor notch 9. A tranverse recess 15 is fashable jaws adapted to engage the tubing or ioned in the jaws 2 and 3 at their free ends, other article, and one object of the inventhe recess being in the lower portion of the tion is to provide af simple but eilicient means jaws. j

1.0 `for latching the jaws securely but releasa- A bearing 16 is secured to the outer sur- 65 bly in closed position. "face of the jaw 2 adjacent to the free end It is within the province of the disclosure thereof. A loop-shaped keeper 1'? is proto improve generally and to enchance the vided, the same including an end 18, an utility of devices oi that type to which the end piece 19, and side pieces 2O and 21, the

15 invention appertains. side piece 20 being straight, and the side 70 With the above and other objects in view, piece 21 being curved slightly. The end which will appear as the description prcpiece 19 is mounted for rocking movement in ceeds, the invention resides in the combithe bearing` 16 and is received somewhat nation and arrangement of parts and in loosely in the hearing, so that the end piece 20 the details ot construction hereinafter may tilt in the bearing, out ot parallelism described and claimed, it being understood with the axis ofthe bearing, as shown in that, within the scope of what is claimed, Figure 6, Figure 6 being a diagrammatic. changes in the precise embodiment oit the view wherein the tilting of the part 19 is invention shown can be made. without deeXaggerated, in Order to bring out a feature part-ing from the spirit of the invention. ot operation hereinafter described. A tln- 80 ln the accompanying drawings ger 22 projects from the side piece 2O of the Figure 1 shows in elevation, a device keeper 17 and is adapted to enter the seat constructed in accordance with the inven- 9, the finger being supplied in its under surtion; Figure 2 is an elevation wherein the tace with a recess 23 adapted to receive the device is viewed at right angles to the showlugs 10 on the jaws 2 and 3. j.

ing of Figure 1; Figure 3 is aY section taken A longitudinal recess 25 is formed in the approximately on the line 3-3 of Figure 1; jafw 2 at the free end thereof. `The numeral Figure i is a section taken approximately 26 marks a hook-shaped latch which is reon the line l-i oi Figure 1; and Figure 5 .sil1ent, one end of the latch being secured is a'y section taken approximately on the to the inner suriiace of the jaw S at the tree im line 5-5 of Figure 4, parts being omitted; end thereof, the latch Comprising an inand Figure 6 is a diagrammatic view ilclined arm 27 having a shoulder 28`provided lustrating the operation of the latch mechawith an inset end 29 mounted slidably on nism; a headed stop pin 30 carried by the jaw 3,

40 The device `forming the subject matter of the stop pin serving to limit the outward m5 this application comprises a body, denoted swinging movement of the spring arm 27. generally by the numeral 1 and including The jaws 2 and 3 are equipped with outjaws 2 and 3, provided at one end with standing circumferentially grooved knobs 31 knuckles 4l, through which passes a pivot on which the lower ends of loop-shaped sus- Y element 5, the jaws 2 and 3 thus being s0 pension elements 32 are mounted, the suspenconnected that they may be swung toward Sion elements .being held on the knobs by and away from each other, the opening bearings 33, disposed between the side pormovement ot the jaws being limited by tions of the suspension elements. The bearshoulders 6 located on the jaws, at the knuckings 33 have outstanding projections Sli les 4i thereof. intermediate their ends, and Vmounted to move in notches 35 Jformed on' upon their inner surfaces, the aws 2 and 3 the peripheries of the knobs'l, the notches 35 are supplied with grooves 7 which coact being of such circumferential extentthat the to form an opening 8 adapted to receive the body 1 may be swung on the suspension eletubing or other article. At one side of the ments 32 through an angle ot approximately opening, the jaws 2 and 3 are cut away, ninety degrees, thereby to permit the tubing or other article which is carried between the jaws 2 and 3 to be disposed either in a vertical position or in a horizontal position.

A glance at the drawings taken in connection with the foregoingdescription, will render clear to those skilled in the art, the general operation and functions of such parts as the body 1, the suspension velements 32 and the like, it being clear that the jaws 2 and 3 may be opened and closed to receive the tubing or other article.

The device, however, is characterized by a peculiar operation which takes place in ccnnection with the keeper 17, and this operation now will be set forth.

When the keeper 17 is swung around toward the locked position shown in Figure 3, the arm 27 ot' the spring latch 26 is pressed inwardly by the end piece 18 of the keeper. The linger 22 on 'the side piece 20 oit the keeper thus rides up on the inclined sur aces of the lugs 10 of the jaws 2 and 3, as shown in Figure 6, the result being` that the keeper is tilted in the bearing 16 in the direction ot t-he arrow A in Figure 6, the tilting of the keeper being' exaggerated in that figure tor t-he sake of illustration. The free end of the finger 22 ultimately passes over the lugs 10 and, since the shoulder 28 on the arm 27 ot the latch 26 tends to exert a pressure in the direction. of the arrow B in Figure 6, at right angles to the axis ot the bearing 16, the end piece 19 of the keeper is straightened up, until it stands parallel with the axis of the bearing 16, the free end ot the finger 22 moving downwardly in the direction of the arrow C, and the lugs 10 on the jaws 2 and 3 being received in the recess 23 of the finger 22. The result is that the aws 2 and 3 are held by a d'onble lock, the end piece 18 of the keeper 17 preventing the jaws from opening, and the lngslO of the jaws being received in the recess 231 of the inger 22, the shoulder 28 on the latch 26 engaging with the end piece 18 of the keeper as shown in Figure 3 to prevent the keeper from opening.

What is claimed is 1. A device of the class described comprising jaws having knobs, means for pivotally connecting the jaws, loop-shaped suspension elements receiving the knobs, and bearings in the suspension elements and cooperating with the knobs, the bearings and the knobs having cooperating elements which limit the swinging movement of the suspension elements to a predetermined are on the knobs.

A device of the class described compris ing aws having outstanding knobs supplied with circumferential grooves, means for connecting the jaws pivotally, loop-shaped suspension elements received in the grooves of the knobs, bearings mounted in the snspension elements, and having outstanding projections, the bearings coacting with the knobs to retain the suspension elements thereon, and the knobs being supplied with peripheral notches wherein the projections of the bearings have limited movement circumferentially ot' the knobs.

3. lin a device of the class described, a pair of pivotally connected jaws, a keeper receiving one jaw and mounted to swing on the other jaw, the keeper and one jaw having interengaging elements, the keeper being tiltable from an original position to permit said interengaging elements to pass each other, and spring means for tilting the keeper back to said original position to cause said clements to interengage after the keeper has been swung to closed position.

el. In a device of the class described, a pair of pivotally connected jaws, a keeper receiving one jaw and mounted to swing on the other jaw, the keeper on one jaw having interengaging elements, the keeper being tiltable from an original position to permit said interengaging elements to passieach other, and spring means for tilting the keeper back to said original position to cause said elements to interengage after the keeper has been swung to closed position, said spring means comprising a part coacting with the keeper to hold the keeper in closed position.

In testimony that l claim the foregoing as my own, I have hereto attixed my signature.

JOHN H. GIBSGN.

titl 

